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Dahlia Polventum Supreme

Dahlia Polventum Supreme
Dahlia

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This pastel dahlia produces numerous globular flowers, in the shape of honeycomb pompons, with a very pale yellow colour in the centre, almost white on the edges. They bloom on a 90cm (35in) tall plant, from July to October, supported by sturdy stems. Beautiful in flower beds, they are also perfect for bouquets.
Flower size
12 cm
Height at maturity
90 cm
Spread at maturity
60 cm
Exposure
Sun
Hardiness
Hardy down to -4°C
Soil moisture
Moist soil
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Best planting time March to May
Recommended planting time March to June
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Flowering time July to November
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Description

Dahlia 'Polventum Supreme' is a variety of dahlia known as a "ball" dahlia that will charm with its pale yellow flowers in campanulate pompom heads, of a good size for a ball dahlia, very bright and produced profusely on a sturdy plant. They blend in with flower beds and work wonders in a vase with white or blue flowers.

Dahlias belong to the aster family and are originally from the high plateaus of Mexico. Currently, the approximately 75,000 horticultural varieties obtained by humans have invaded gardens around the world, much to our delight.


The recently launched 'Polventum Supreme' variety in the horticultural market will reach approximately 90cm (35in) in height and 60cm (24in) in diameter. It is a decorative dahlia classified as a ball dahlia; it is a horticultural category defined by the shape of the flower. In this group, the heads are modest in size (7 to 9cm (3 to 4in)), but produced abundantly, and the ligulate florets form a perfectly spherical inflorescence with a honeycomb-like structure. The flowers of 'Polventum Supreme' are globular and have a diameter of about 12cm (5in). The ligulate florets are white, washed with pale yellow, gradually lightening on the periphery over time. The golden heart of the flower only appears late, just before wilting. The abundant flowering takes place from July to October. The habit is bushy and upright. The highly branched stems are hollow, and the leaves are opposite, pinnatisect, meaning they divide into 3 or 5 highly dentate lobes. The stems and leaves are of a medium green colour.

To promote repeat flowering, take care to remove faded flowers, or better yet, regularly make large colorful bouquets by combining it with other varieties. 'Polventum Supreme' fits well in flower beds with white, blue, or orange flowers. It pairs perfectly with grasses and bellflowers. Also associate it with coneflowers that bloom at the same time, as well as asters and large daisies... This variety allows you to enhance bouquets until late in the season.

As a star plant in borders and cottage gardens, dahlias confidently accompany the most beautiful flowers but are also appreciated alongside vegetable plants. In Mexico, this tuberous plant was first cultivated as a root vegetable for consumption. However, its poor taste qualities relegated it to the status of an ornamental plant. Since then, the interest in their beautiful exuberance has never waned.

 

Dahlia Polventum Supreme in pictures

Dahlia Polventum Supreme (Flowering) Flowering

Plant habit

Height at maturity 90 cm
Spread at maturity 60 cm
Growth rate fast

Flowering

Flower colour yellow
Flowering time July to November
Inflorescence Flower head
Flower size 12 cm
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Botanical data

Genus

Dahlia

Cultivar

Polventum Supreme

Family

Asteraceae

Other common names

Dahlia

Origin

Cultivar or hybrid

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Planting and care

Dahlia 'Polventum Supreme' is easy to grow in all regions. For abundant flowering, it is good to follow a few simple rules, plant the tubers in a sunny location as soon as the last frosts have passed, rich, fresh and well-drained soils are perfect. However, stagnant moisture would promote the rotting of the tubers. Do not hesitate to amend the soil with compost and sand if necessary. Work the soil deeply and enrich it, for example, with crushed horn or dehydrated blood. Place your tuber and crumble the soil well to fill without air pockets. Your dahlia should be covered with about 6cm (2in) of soil. At the end of planting, water once abundantly and then renew this watering regularly during the first 6 weeks to help with rooting.

Dahlias are sensitive to cold, they need to be overwintered. In November, the first frosts cause the foliage to blacken, it is time to dig them up. Carefully unearth the tubers. Remove as much soil as possible. Let the foliage dry so that the tubers can replenish their reserves. Then cut the stems to 10cm (4in). Spread your bulbs in a box on newspaper. Store them protected from frost in a dry, cool and dark place, such as a frost-free garage or attic, for example. In regions in the South, close to the coast, where there are few days of frost per year, it is possible to leave them in place. In this case, simply cover the soil with a carpet of leaves or straw for protection.

Planting period

Best planting time March to May
Recommended planting time March to June
Planting depth 15 cm

Intended location

Suitable for Meadow
Type of use Border
Hardiness Hardy down to -4°C (USDA zone 9b) Show map
Ease of cultivation Beginner
Planting density 5 per m2
Exposure Sun
Soil pH Any
Soil moisture Moist soil, Fertile, well-draining.

Care

Pruning instructions Remove flower regularlly.
Pruning Pruning recommended once a year
Pruning time July to September
Soil moisture Moist soil
Disease resistance Very good
Overwinter Needs to be stored

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